Patents by Inventor Sze Kuang Lee
Sze Kuang Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20190371989Abstract: A method of manufacturing a lead frame, includes preparing a stamping arrangement to stamp a lead frame comprising a plurality of electrode contact regions, wherein complementary contact regions are separated by an initial gap width; and a number of connecting bars, wherein a connecting bar extends between regions of the lead frame; using the stamping arrangement to stamp the lead frame; and deforming at least one connecting bar of the stamped lead frame to reduce the gap width between complementary contact regions to a final gap width. Further described is a lead frame comprising a plurality of LED electrode contact regions, with a gap width of at most 250 ?m between complementary contact regions after the deformation step. The invention further describes an LED lighting device comprising such a lead frame and at least one LED die package mounted onto complementary electrode contact regions of the lead frame.Type: ApplicationFiled: November 6, 2017Publication date: December 5, 2019Applicant: Lumileds LLCInventors: Yuan XIE, Jürgen MERTENS, Sze Kuang LEE, Nan CHEN
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Patent number: 9905544Abstract: In one embodiment, an LED bulb includes a plurality of metal lead frame strips, including at least a first strip, a second strip, and a third strip. First LED dies have their bottom electrodes electrically and thermally connected to a top surface of the first strip. Second LED dies have their bottom electrodes electrically and thermally connected to a top surface of the second strip. The top electrodes of the first LED dies are wire bonded to the second strip, and the top electrodes of the second LED dies are wire bonded to the third strip to connect the first LED dies and second LED dies in series and parallel. The strips are then bent to cause the LED dies to face different directions to obtain a wide emission pattern in a small space. The strips are then enclosed in a thermally conductive bulb having electrical leads.Type: GrantFiled: December 9, 2016Date of Patent: February 27, 2018Assignee: Lumileds LLCInventors: Sze Kuang Lee, Paul Scott Martin, Albrecht Johannes Kraus, Chunheng Kang, Hui Ling Pan, Long Yin
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Publication number: 20170276318Abstract: A device according to embodiments of the invention includes a light emitting diode (LED) mounted on an electrically conducting substrate. A lens is disposed over the LED. A polymer body is molded over the electrically conducting substrate and in direct contact with the lens.Type: ApplicationFiled: September 15, 2015Publication date: September 28, 2017Inventors: Huiling Pan, Paul Scott Martin, Albrecht Johannes Kraus, Chao Ding, Sze Kuang Lee
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Patent number: 9773762Abstract: In one embodiment, an LED bulb includes a plurality of metal lead frame strips, including at least a first strip, a second strip, and a third strip. First LED dies have their bottom electrodes electrically and thermally connected to a top surface of the first strip. Second LED dies have their bottom electrodes electrically and thermally connected to a top surface of the second strip. The top electrodes of the first LED dies are wire bonded to the second strip, and the top electrodes of the second LED dies are wire bonded to the third strip to connect the first LED dies and second LED dies in series and parallel. The strips are then bent to cause the LED dies to face different directions to obtain a wide emission pattern in a small space. The strips are then enclosed in a thermally conductive bulb having electrical leads.Type: GrantFiled: December 9, 2016Date of Patent: September 26, 2017Assignee: Koninklijke Philips N.V.Inventors: Sze Kuang Lee, Paul Scott Martin, Albrecht Johannes Kraus, Chunheng Kang, Hui Ling Pan, Long Yin
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Publication number: 20170092628Abstract: In one embodiment, an LED bulb includes a plurality of metal lead frame strips, including at least a first strip, a second strip, and a third strip. First LED dies have their bottom electrodes electrically and thermally connected to a top surface of the first strip. Second LED dies have their bottom electrodes electrically and thermally connected to a top surface of the second strip. The top electrodes of the first LED dies are wire bonded to the second strip, and the top electrodes of the second LED dies are wire bonded to the third strip to connect the first LED dies and second LED dies in series and parallel. The strips are then bent to cause the LED dies to face different directions to obtain a wide emission pattern in a small space. The strips are then enclosed in a thermally conductive bulb having electrical leads.Type: ApplicationFiled: December 9, 2016Publication date: March 30, 2017Inventors: Sze Kuang Lee, Paul Scott Martin, Albrecht Johannes Kraus, Chunheng Kang, Hui Ling Pan, Long Yin
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Patent number: 9530949Abstract: In one embodiment, an LED bulb includes a plurality of metal lead frame strips, including at least a first strip, a second strip, and a third strip. First LED dies have their bottom electrodes electrically and thermally connected to a top surface of the first strip. Second LED dies have their bottom electrodes electrically and thermally connected to a top surface of the second strip. The top electrodes of the first LED dies are wire bonded to the second strip, and the top electrodes of the second LED dies are wire bonded to the third strip to connect the first LED dies and second LED dies in series and parallel. The strips are then bent to cause the LED dies to face different directions to obtain a wide emission pattern in a small space. The strips are then enclosed in a thermally conductive bulb having electrical leads.Type: GrantFiled: June 18, 2014Date of Patent: December 27, 2016Assignee: Koninklijke Philips N.V.Inventors: Sze Kuang Lee, Paul Scott Martin, Albrecht Johannes Kraus, Chunheng Kang, Hui Ling Pan, Long Yin
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Publication number: 20160329473Abstract: In one embodiment, an LED bulb includes a plurality of metal lead frame strips, including at least a first strip, a second strip, and a third strip. First LED dies have their bottom electrodes electrically and thermally connected to a top surface of the first strip. Second LED dies have their bottom electrodes electrically and thermally connected to a top surface of the second strip. The top electrodes of the first LED dies are wire bonded to the second strip, and the top electrodes of the second LED dies are wire bonded to the third strip to connect the first LED dies and second LED dies in series and parallel. The strips are then bent to cause the LED dies to face different directions to obtain a wide emission pattern in a small space. The strips are then enclosed in a thermally conductive bulb having electrical leads.Type: ApplicationFiled: June 18, 2014Publication date: November 10, 2016Inventors: Sze Kuang Lee, Paul Scott Martin, Albrecht Johannes Kraus, Chunheng Kang, Hui Ling Pan, Long Yin
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Patent number: 8471554Abstract: An encoder module with an alignment system with an encoder device, a housing and a movable hub is presented. The encoder module may be integrated with an alignment system to facilitate a built-alignment feature for aligning an encoder device disposed within the encoder module. The encoder module may include a hub that may be movably arranged in the housing and rotatable about a central axis of rotation. The hub may be slidingly moved between a first position configured to set the encoder module to engage in a centering mode and a second position configured to set the encoder module to engage in a rotational mode. The encoder module may be configured to be slidingly disposed on a motor whereby a sleeve of the hub is configured to mate with a shaft of the motor by means of slide fitting.Type: GrantFiled: January 24, 2011Date of Patent: June 25, 2013Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.Inventor: Sze Kuang Lee
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Publication number: 20120187942Abstract: An encoder module with an alignment system with an encoder device, a housing and a movable hub is presented. The encoder module may be integrated with an alignment system to facilitate a built-alignment feature for aligning an encoder device disposed within the encoder module. The encoder module may include a hub that may be movably arranged in the housing and rotatable about a central axis of rotation. The hub may be slidingly moved between a first position configured to set the encoder module to engage in a centering mode and a second position configured to set the encoder module to engage in a rotational mode. The encoder module may be configured to be slidingly disposed on a motor whereby a sleeve of the hub is configured to mate with a shaft of the motor by means of slide fitting.Type: ApplicationFiled: January 24, 2011Publication date: July 26, 2012Applicant: AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTDInventor: Sze Kuang Lee
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Patent number: 8063355Abstract: Disclosed herein are a number of different embodiments of reflective multi-turn optical encoders with different light sensing systems. Three different basic configurations of reflective multi-turn optical encoder light sensing systems are disclosed herein: (a) optical encoders employing multiple arrays of light detectors; (b) optical encoders employing multiple arrays of stacked die light sensors, and (c) optical encoders employing variable tone density light sensing systems.Type: GrantFiled: January 8, 2009Date of Patent: November 22, 2011Assignee: Avago Technologies LimitedInventors: Sze Kuang Lee, Yee Loong Chin, Weng Fei Wong
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Publication number: 20110207578Abstract: Various embodiments of harmonic gear multi-turn encoders are disclosed that provide the ability to accurately sense absolute rotational positions over a wide range of rotational counts. High gear reduction ratios in each stage of the multi-turn encoders permit very small size and volume encoders to be provided, thereby opening up many new applications for multi-turn encoders. In one embodiment, inductive means are employed to determine the number of revolutions a central shaft operably connected to an encoder module has turned. The inductive coils comprise emitter coils and receiver coils, which are operably associated with and opposed to corresponding encoder devices. The various embodiments of the harmonic gear multi-turn encoders disclosed herein are capable of operating under high temperature conditions and withstanding the effects of various environmental contaminants, and are also amenable to miniaturization and low cost manufacturing.Type: ApplicationFiled: February 23, 2010Publication date: August 25, 2011Applicant: Avago Technologies ECBU (Singapore) Pte, Ltd.Inventors: Sze Kuang Lee, Weng Fei Wong
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Publication number: 20100171029Abstract: Disclosed herein are a number of different embodiments of reflective multi-turn optical encoders with different light sensing systems. Three different basic configurations of reflective multi-turn optical encoder light sensing systems are disclosed herein: (a) optical encoders employing multiple arrays of light detectors; (b) optical encoders employing multiple arrays of stacked die light sensors, and (c) optical encoders employing variable tone density light sensing systems.Type: ApplicationFiled: January 8, 2009Publication date: July 8, 2010Applicant: Avago Technologies ECBU (Singapore) Pte. Ltd.Inventors: Sze Kuang Lee, Weng Fei Wong, Yee Loong Chin
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Patent number: 7579829Abstract: According to one embodiment, there is provided an inductive multi-turn encoder which employs inductive means to determine the number of revolutions a central shaft operably connected to the module has turned. The inductive coils comprise emitter coils and receiver coils, which are operably associated with and opposed to corresponding geared circular disks, which in turn are arranged to implement a predetermined gear reduction ratio. The inductive multi-turn encoder is capable of operating under high temperature conditions and withstanding the effects of various environmental contaminants. The inductive multi-turn encoder disclosed herein is also amenable to miniaturization and low cost manufacturing.Type: GrantFiled: July 6, 2008Date of Patent: August 25, 2009Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.Inventors: Weng Fei Wong, Sze Kuang Lee
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Publication number: 20090152452Abstract: A reflective optical encoder for a gear train. The reflective optical encoder includes a gear train with a plurality of gears. Each of the gears is operably coupled to at least one other gear of the plurality of gears. A reflective code pattern is accessible on a surface of at least one of the gears. A reflective optical sensor detects light reflected by the reflective code pattern. Position logic coupled to the optical sensor determines a rotational parameter of the gear train based on the light reflected by the reflective code pattern. Additionally, the position logic may determine rotational parameter of a pinion coupled to the gear train based on the rotational parameter of the gear train.Type: ApplicationFiled: December 18, 2007Publication date: June 18, 2009Applicant: AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD.Inventors: Sze Kuang Lee, Weng Fei Wong
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Patent number: 7449677Abstract: An optical encoder includes a code strip having a first side, a second side, a first track comprising indicia thereon, and a second track comprising indicia thereon. The code strip is moveable along a displacement path with respect to the optical encoder. A light source positioned on the first side of the code strip directs light toward the code strip. A first detector element is positioned on the second side of the code strip and is generally aligned with the first track of the code strip. A second detector element is positioned on the second side of the code strip and is generally aligned with the second track of the code strip. The second detector element is also positioned so that the second detector element is located a spaced distance along the displacement path from the first detector element.Type: GrantFiled: June 4, 2007Date of Patent: November 11, 2008Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.Inventors: Kean Foong Ng, Sze Kuang Lee, Hock Aun Tan, Weng Fei Wong, Wee Jin Yeap, Chee Foo Lum, Kok Hing Fo, Toshiya Hataguchi, Randeep Singh A/L Amarjit
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Patent number: 7244928Abstract: An optical encoder includes a code strip having a first side, a second side, a first track comprising indicia thereon, and a second track comprising indicia thereon. The code strip is moveable along a displacement path with respect to the optical encoder. A light source positioned on the first side of the code strip directs light toward the code strip. A first detector element is positioned on the second side of the code strip and is generally aligned with the first track of the code strip. A second detector element is positioned on the second side of the code strip and is generally aligned with the second track of the code strip. The second detector element is also positioned so that the second detector element is located a spaced distance along the displacement path from the first detector element.Type: GrantFiled: January 7, 2005Date of Patent: July 17, 2007Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.Inventors: Kean Foong Ng, Sze Kuang Lee, Hock Aun Tan, Weng Fei Wong, Wee Jin Yeap, Chee Foo Lum, Kok Hing Fo, Toshiya Hataguchi, Randeep Singh A/L Amarjit Singh
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Patent number: D719690Type: GrantFiled: July 9, 2013Date of Patent: December 16, 2014Assignee: Koninklijke Philips N.V.Inventors: Chao Ding, Sze Kuang Lee, Long Yin, Chun Heng Kang, Yang Guang Zhao
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Patent number: D738006Type: GrantFiled: April 23, 2014Date of Patent: September 1, 2015Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Hui Ling Pan, Jin Cherl Kwon, Sze Kuang Lee, Albrecht Johannes Kraus, Paul Scott Martin, Chao Ding
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Patent number: D738007Type: GrantFiled: April 23, 2014Date of Patent: September 1, 2015Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Hui Ling Pan, Jin Cherl Kwon, Sze Kuang Lee, Albrecht Johannes Kraus, Paul Scott Martin, Chao Ding